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Overflow data labels

This is an easy feature to explain, but a hard one to reproduce! By
default, data labels showing inside a column or bar will only appear if there's
sufficient space:

Here the only column big enough to display the data label is the one for the
South-East region.

To change the behaviour of data labels, turn the background colour on:

Turn on the
Show background property to change how your data labels appear.

The good news is that you can now see all of your data labels, but the bad news
is that they've moved out of their boxes:

Data labels outside their boxes!

If you now set the
Overflowtext property, the data labels will appear inside the box again.

By showing labels' backgrounds and letting their text overflow, you'll get this effect:

You can tell Power BI Desktop to let data labels overflow, so that you always see a label even if it wouldn't otherwise fit into the relevant column or bar.

I couldn't get this to work without first setting the Show background
property, but it's possible I'm missing something. In any case,
it's hardly a feature to write home about ...